POST UTME LEAD CITY UNIVERSITY 2022 Biology | Objective

Are you preparing for POST UTME LEAD CITY UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2022 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
A study on the genetic variation of a population found that the frequency of the recessive allele is 0.2. What is the expected frequency of the dominant allele?
Correct A. 0.8
B. 0.6
C. 0.4
D. 0.2

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 2
A diagram of the nervous system shows the following connections: A → B → C → D. If the stimulus is applied to node A, what is the order of the neurons that will be activated?
Correct A. A → B → C → D
B. A → C → B → D
C. B → A → C → D
D. C → A → B → D

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 3
A plant grows in a controlled environment with a cons\tant temperature of 25°C and a 12-hour light cycle. What is the expected growth rate of the plant?
A. 0.5 cm/h
Correct B. 1.0 cm/h
C. 1.5 cm/h
D. 2.0 cm/h

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 4
A diagram of the respiratory system shows the following components: A → B → C → D. If the air enters the lungs at node A, what is the order of the components that will be involved in gas exchange?
Correct A. A → B → C → D
B. A → C → B → D
C. B → A → C → D
D. C → A → B → D

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 5
A study on the effect of antibiotics on bacterial growth found that the growth rate of the bacteria is 0.5 cm/h. What is the expected time for the bacteria to reach a population of 1000?
A. 10 hours
Correct B. 20 hours
C. 30 hours
D. 40 hours

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 6
The xylem tissue in plants is responsible for transporting water and minerals from the roots to the leaves. Which of the following is a characteristic of xylem tissue?
A. It is composed of dead cells.
B. It is responsible for transporting sugars from the leaves to the roots.
C. It is composed of living cells.
Correct D. It is responsible for transporting water and minerals from the roots to the leaves.

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 7
The process of excretion in humans involves the removal of waste products from the body. Which of the following organs is responsible for filtering waste from the blood?
A. Liver
Correct B. Kidneys
C. Lungs
D. Skin

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 8
The sense organ responsible for detecting changes in light intensity is the?
Correct A. Eye
B. Ear
C. Nose
D. Tongue

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 9
The process of asexual reproduction in plants involves the production of?
A. Seeds
Correct B. Spores
C. Buds
D. Rhizomes

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 10
The xylem tissue in plants is responsible for transporting water and minerals from the roots to the leaves. Which of the following is a characteristic of xylem tissue?
A. It is composed of dead cells.
B. It is responsible for transporting sugars from the leaves to the roots.
C. It is composed of living cells.
Correct D. It is responsible for transporting water and minerals from the roots to the leaves.

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 11
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'AA'?
Correct A. 0.36
B. 0.64
C. 0.72
D. 0.84

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 12
A 2-year-old child is brought to the pediatrician with a history of frequent infections. Physical examination reveals a small, non-pitting edema on the lower limbs. Which of the following is the most likely diagnosis?
A. Hypothyroidism
B. Cystic fibrosis
Correct C. Immunodeficiency
D. Nephrotic syndrome

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 13
A patient is diagnosed with a rare genetic disorder characterized by the inability to synthesize the amino acid phenylalanine. Which of the following is the most likely enzyme deficiency?
Correct A. Phenylalanine hydroxylase
B. Tyro\sinase
C. Albinism
D. Cystinuria

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 14
A 35-year-old woman presents with a 2-year history of amenorrhea. Physical examination reveals a small, non-palpable uterus. Which of the following is the most likely diagnosis?
Correct A. Turner syndrome
B. Kallmann syndrome
C. Sheehan syndrome
D. Asherman syndrome

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 15
A 45-year-old man presents with a 5-year history of progressive weakness and wasting of the proximal muscles. Physical examination reveals a characteristic 'honeycomb' appearance of the muscles. Which of the following is the most likely diagnosis?
A. Duchenne muscular dystrophy
Correct B. Becker muscular dystrophy
C. Myotonic dystrophy
D. Spinal muscular atrophy

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 16
In the context of eco\logy, what is the primary function of the symbiotic relationship between clownfish and sea anemones?
A. Predation
Correct B. Mutualism
C. Competition
D. Commensalism

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 17
A population of rabbits is growing according to the \logistic growth model. If the initial population size is 100 and the carrying capacity is 1000, what is the population size after 5 generations?
A. 500
B. 750
Correct C. 900
D. 950

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 18
A geneticist is studying the inheri\tance of a particular trait in a population of fruit flies. The trait is controlled by a \single gene with two alleles: A and a. The genotype and phenotype of the offspring are as follows:
A. AA
B. Aa
C. aa
Correct D. Both AA and aa

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 19
A bio\logist is studying the structure of a mitochondrion. Which of the following is a characteristic of the cristae?
A. Increased surface area for gas exchange
Correct B. Increased surface area for ATP production
C. Decreased surface area for gas exchange
D. Decreased surface area for ATP production

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 20
A genetic engineer is designing a new gene therapy to treat a particular disease. The gene therapy involves the use of a viral vector to deliver a specific gene to the target cells. Which of the following is a potential advantage of u\sing a viral vector?
A. Increased specificity of gene delivery
Correct B. Increased efficiency of gene delivery
C. Decreased risk of off-target effects
D. Increased risk of immune response

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 21
In the xylem, what is the primary function of the tracheids?
Correct A. Transport of water and minerals from roots to leaves
B. Transport of sugars and amino acids from leaves to roots
C. Support and structure to the plant
D. Storage of food and water

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 22
The diagram below shows the structure of a neuron. What is the function of the d\endrites?
A. To transmit signals to other neurons
Correct B. To receive signals from other neurons
C. To store information
D. To produce neurotransmitters

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 23
The equation for the diffusion of a subs\tance through a membrane is given by Fick's law. What is the unit of the diffusion coefficient?
Correct A. m^2/s
B. m/s
C. s^-1
D. m^3/s

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 24
The diagram below shows the structure of the human kidney. What is the function of the glomerulus?
Correct A. To filter waste products from the blood
B. To regulate blood pressure
C. To produce hormones
D. To store urine

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 25
The equation for the rate of photosynthesis is given by the light-dep\endent reactions. What is the unit of the rate of photosynthesis?
Correct A. mol/m^2/s
B. mol/m^3/s
C. m^2/s
D. s^-1

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub:
Chat with Support